Weighing scales



FIG. 1 is a top plan view of a weighing scale showing my new design in an open position;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a bottom perspective view thereof in a folded position; 

The ornamental design for weighing scales, as shown and described. 